Implement invulnerability/intangibility and sakurai angle (#78)

Reviewed-on: #78
Co-authored-by: Álex Román Núñez <eirexe@eirteam.moe>

src/fighter/attack/reaction.rs

@@ -4,8 +4,16 @@ use bevy_ggrs::prelude::GgrsSchedule;
 use super::*;
 use crate::{
     fighter::{
-        Fighter, FighterFacingDirection, FighterHitboxes, FighterHitstop, FighterHitstopShake, FighterHitstopShakeKind, FighterHitstopShakeRole, FighterPendingHitReaction, FighterStaleMoveQueue, errors::FighterErrors, manifest::FighterManifest, state::FighterState,
-    }, game_settings::GameSettings, math::{int::FGi32}, player::Player, schedule::GameplaySet, scripting::FighterAttackScript,
+        Fighter, FighterFacingDirection, FighterHitboxes, FighterHitstop, FighterHitstopShake,
+        FighterHitstopShakeKind, FighterHitstopShakeRole, FighterPendingHitReaction,
+        FighterStaleMoveQueue, FighterSurfaceState, errors::FighterErrors,
+        manifest::FighterManifest, state::FighterState,
+    },
+    game_settings::GameSettings,
+    math::int::FGi32,
+    player::Player,
+    schedule::GameplaySet,
+    scripting::FighterAttackScript,
 };
 
 pub fn resolve_fighter_hits(
@@ -18,7 +26,14 @@ pub fn resolve_fighter_hits(
         &mut FighterHitstop,
         &mut FighterHitstopShake,
     )>,
-    mut receiver: Query<(&mut FighterDamage, &Fighter, &mut FighterPendingHitReaction, &FighterState)>,
+    mut receiver: Query<(
+        &mut FighterDamage,
+        &Fighter,
+        &mut FighterPendingHitReaction,
+        &FighterState,
+        &FighterInvulnerabilityState,
+        &FighterSurfaceState,
+    )>,
     attack_scripts: Res<Assets<FighterAttackScript>>,
     game_settings: Res<GameSettings>,
     fighter_manifests: Res<Assets<FighterManifest>>,
@@ -33,7 +48,14 @@ pub fn resolve_fighter_hits(
             .position(|hit| hit.defender != defender)
             .map_or(hits.len(), |offset| hit_offset + offset);
 
-        let Ok((mut receiver_damage, fighter, mut pending_reaction, receiver_state)) = receiver.get_mut(defender)
+        let Ok((
+            mut receiver_damage,
+            fighter,
+            mut pending_reaction,
+            receiver_state,
+            invuln_state,
+            receiver_surface_state,
+        )) = receiver.get_mut(defender)
         else {
             hit_offset = next_defender;
             continue;
@@ -79,10 +101,12 @@ pub fn resolve_fighter_hits(
                 false,
                 false,
             );
-            let angle = match &hitbox.angle {
-                AttackAngle::Normal(angle) => *angle,
-                AttackAngle::Sakurai => FGi32::lit("32.0"),
-            };
+            let angle = hitbox.angle.get_angle(
+                &knockback,
+                receiver_surface_state.is_grounded(),
+                &game_settings,
+            );
+            dbg!(knockback, angle);
             let launch_angle = if facing_left {
                 FGi32::lit("180.0") - angle
             } else {
@@ -100,15 +124,21 @@ pub fn resolve_fighter_hits(
                     hitstun_frames: knockback.get_hitstun_frames(&game_settings),
                     hitstop_frames: hitstop,
                     kind: HitReactionKind::Flinch,
-                    damage: FighterDamage(attack_damage)
+                    damage: FighterDamage(attack_damage),
                 },
             ));
         }
 
-        receiver_damage.0 += total_damage_received_this_frame;
+        match invuln_state {
+            FighterInvulnerabilityState::Vulnerable => {
+                receiver_damage.0 += total_damage_received_this_frame
+            }
+            _ => (),
+        }
 
         for (attacker_entity, _, reaction) in &reactions {
-            let Ok((.., _, mut hitstop, mut hitstop_shake)) = attacker.get_mut(*attacker_entity) else {
+            let Ok((.., _, mut hitstop, mut hitstop_shake)) = attacker.get_mut(*attacker_entity)
+            else {
                 continue;
             };
 
@@ -119,7 +149,9 @@ pub fn resolve_fighter_hits(
                     FighterHitstopShakeKind::Vertical
                 };
                 hitstop.remaining_frames = reaction.hitstop_frames.0;
-                let shake_frames = reaction.hitstop_frames.calculate_shake_frames(&game_settings);
+                let shake_frames = reaction
+                    .hitstop_frames
+                    .calculate_shake_frames(&game_settings);
                 hitstop_shake.total_frames = shake_frames;
                 hitstop_shake.remaining_frames = shake_frames;
                 hitstop_shake.kind = shake_kind;
@@ -127,16 +159,23 @@ pub fn resolve_fighter_hits(
             }
         }
 
-        pending_reaction.0 = reactions
-            .into_iter()
-            .min_by(|(_, port_a, _), (_, port_b, _)| port_a.cmp(port_b))
-            .map(|(_, _, reaction)| reaction);
+        match invuln_state {
+            FighterInvulnerabilityState::Vulnerable => {
+                pending_reaction.0 = reactions
+                    .into_iter()
+                    .min_by(|(_, port_a, _), (_, port_b, _)| port_a.cmp(port_b))
+                    .map(|(_, _, reaction)| reaction);
+            }
+            _ => (),
+        }
 
         hit_offset = next_defender;
     }
 
     for hit in hits {
-        let Ok((mut stale_move_queue, _facing_direction, mut hitboxes, ..)) = attacker.get_mut(hit.attacker) else {
+        let Ok((mut stale_move_queue, _facing_direction, mut hitboxes, ..)) =
+            attacker.get_mut(hit.attacker)
+        else {
             continue;
         };